On June 4, 2010, Kyron Horman, a cute 7-year-old Oregon boy with glasses, went missing. His stepmother, Terri, says she dropped him off at school, but Kyron didn't get off the bus that afternoon. Terri and Kaine, Kyron's father, rushed to the boy's school only to find that he had been reported absent that day. Authorities launched a massive search, but Kyron still hasn't been found.

At first, Kyron's entire family—his divorced parents and their new spouses—stood together, but it didn't last. First, police questioned Terri's story of her whereabouts that day. Then, a leaked police report said Terri may have tried to pay someone to kill her husband, Kaine, Kyron's father. Kaine immediately moved out of their home and filed for divorce.

Desperate for answers, Kyron's biological mother, Desiree, made a public plea. She specifically reached out to whomever is responsible. "You will go to jail, and whoever has been helping you will either have to talk or they will go to jail," she said. "I believe that you really want to make the right choice and bring Kyron home."

Desiree says her suspicion of Terri is due to the things she's done since Kyron disappeared. "Ever since the beginning of this investigation, ever since Kyron went missing, there have been so many ... red flags," she says.

Terri has not been charged with any crime, and police say they do not consider her a suspect or person of interest. The Oprah Winfrey Show asked Terri Horman's attorney for a statement, but he declined to comment.